As a broad rule, pharmaceutical and premium supplement makers use 98% or 99% psyllium husk. Food manufacturers often use 95% to 98%, and animal feed uses 85% husk or milling by-products such as khakha powder.
These are trade habits, not rules. The grade you need is set by your product, your customer's specification and, for medicines, the pharmacopoeia or registration your product relies on.
Pharma and supplements
Medicinal fibre products need tight, repeatable quality. Dose depends on the amount of active fibre per gram, so purity and swell volume must be consistent from lot to lot. Microbial limits are strict and documentation is heavy.
- Grade: usually 98% or 99% husk, often as fine powder for capsules, tablets or drink mixes.
- Standards: many buyers require compliance with a USP or EP monograph. See whether psyllium needs to meet USP or EP standards.
- Microbiology: often steam sterilised to meet microbial limits.
- Paperwork: certificate of analysis per lot, traceability to seed lots and an audited plant.
Food
Food uses include bakery, gluten-free baking, breakfast cereals, drinks and fibre-enriched products. Psyllium helps bind water and improve texture. Food buyers usually need a grade that is clean and consistent, but the dose sensitivity is lower than in medicine.
- Grade: often 95% or 98% husk or husk powder.
- Mesh: chosen to suit mixing and texture in the recipe.
- Microbiology: limits set by your food safety plan and customer, sometimes requiring steam sterilisation.
- Residues: pesticide residues and contaminants must meet your own country's limits.
Feed and pet food
Feed uses can accept lower purity. Formulators use 85% husk, lower grade powder, khakha or the de-husked kernel. Pet food makers sometimes use higher grades for fibre claims. See psyllium in pet food and the grade needed for that case.
Lower grade does not mean no checks. Feed rules still cover contaminants such as mycotoxins and heavy metals, and the material must be fit for animals.
How to decide
Grade choice is also a cost decision. Each step up in purity costs more, because the mill removes more material and sells less top-grade husk per tonne of seed. Paying for 99% when 95% works in your recipe wastes money. Buying too low a grade can cost more in failed batches and complaints.
Availability shifts with the crop too. In a year with rain at harvest, high grades are scarcer, so secure supply early if you need them.
- Read your customer's spec first, if there is one.
- Test two grades in your own process before you commit.
- Specify purity, swell volume, ash, moisture and microbiology together.
- Do not use a feed grade in food, even if a trader offers it cheaply.
Where we come in
We find Unjha processors that already supply your end use, whether pharma, food or feed, and check their plant and records. We test samples at an NABL-accredited lab and inspect the lot before loading. Start with a free sourcing review.